TY - GEN
T1 - Study of pressure estimation for a human circulatory system with a LVAD
AU - Wu, Yi
AU - Allaire, Paul
AU - Tao, Gang
AU - Olsen, Don
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2006
Y1 - 2006
N2 - Physiological control of a left ventricular assist device (LVAD) is related to the control of blood pressure. Based on the state space model of human circulatory system, the mean aortic pressure can be estimated. This work is to study the estimation error in the presence of variations of heart rate, systole vs. diastole ratio, left ventricular contractility, resistance of blood vessels, aortic compliance. These variations may occur during the working life of a long term LVAD. Our study demonstrated that the estimator can track the large variation of resistance, and the performance depends on the accuracy of the value for an artificial parameter and the peak to peak (p-p) value of LVAD flow rate. Simulation results showed that the value of this artificial parameter is varying in different scenarios. The result of this study can be utilized for control of long term LVADs, or for non-invasive evaluation of left ventricular function and human circulatory system properties.
AB - Physiological control of a left ventricular assist device (LVAD) is related to the control of blood pressure. Based on the state space model of human circulatory system, the mean aortic pressure can be estimated. This work is to study the estimation error in the presence of variations of heart rate, systole vs. diastole ratio, left ventricular contractility, resistance of blood vessels, aortic compliance. These variations may occur during the working life of a long term LVAD. Our study demonstrated that the estimator can track the large variation of resistance, and the performance depends on the accuracy of the value for an artificial parameter and the peak to peak (p-p) value of LVAD flow rate. Simulation results showed that the value of this artificial parameter is varying in different scenarios. The result of this study can be utilized for control of long term LVADs, or for non-invasive evaluation of left ventricular function and human circulatory system properties.
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M3 - Conference contribution
AN - SCOPUS:34047198760
SN - 1424402107
SN - 9781424402106
T3 - Proceedings of the American Control Conference
SP - 713
EP - 718
BT - Proceedings of the 2006 American Control Conference
T2 - 2006 American Control Conference
Y2 - 14 June 2006 through 16 June 2006
ER -